Involuntary actions like salivation and vomiting are regulated by which specific part of the hind-brain?
Medulla
The question asks which specific part of the hind-brain controls involuntary actions such as salivation and vomiting.
The hind-brain has three main parts - the cerebellum, the pons and the medulla oblongata - and among them the medulla acts as the body's control centre for many automatic, life-sustaining functions.
The medulla (medulla oblongata) connects the brain to the spinal cord and regulates involuntary reflexes like salivation, vomiting, coughing, sneezing, breathing, heartbeat and blood pressure, none of which are under conscious control.
The cerebrum is the largest part of the fore-brain and governs voluntary actions, thought, memory and the senses, so it does not fit an involuntary reflex.
The hypothalamus is also a fore-brain structure (it controls hunger, thirst and body temperature), and the pons mainly relays signals between brain regions and assists in regulating breathing, but the precise reflex centre for salivation and vomiting is the medulla.
Hence, the correct answer is Medulla.
Which of the following organ is part of central nervous system in humans?
I. Heart
II. Spinal cord
What is the primary function of an artificial kidney for humans?
Which of the following organ can be donated while the donor is alive?
I. Part of a liver
II. Kidney
Deoxygenated blood from the body enters through which of the following chamber of the heart of humans?
The biological catalysts which help in the breakdown of food in humans known as _____.
What term is used for the pressure in the artery of human body during relaxation?
In which cell is the respiratory pigment haemoglobin found in humans?
What is the other name of the tissue fluid in human body?
Which gland controls the functioning of other endocrine glands?
The smallest and longest bones in the human body are ________ and _________, respectively.
Which is NOT a part of the urinary system?
Malaria and Kala Azar are caused by:
The human sex chromosomes determine the gender of the child, with XX being: